Jul 4

Jul 4 - Jul 5

4th of July Boat Races

SE

Zimovia Strait

Wrangell, AK

Jul 5

Jul 5 - Jul 6

2025 Madison Regatta

INB-UNL

Ohio River

Madison, IN

Jul 11

Jul 11 - Jul 13

Les Régates de Valleyfield

SE-INB

St-Laurence River

Salaberry-de-Valleyfield, CN

Jul 12

Jul 12 - Jul 13

Black Lake Regatta Inboard Summe...

VINTAGE-INB

Black Lake

Olympia, WA

Jul 12 - Jul 13

Rock Falls River Chase

MOD-SO-J CLSES

Rock River

Rock Falls, IL

Jul 12 - Jul 13

Leo Fry Memorial

OB RR

Rogue River

Agness, OR

Jul 12 - Jul 13

Wild Ones Regatta

SO;D-J CLSES

Grass Lake

Grass Lake, MI

Jul 12 - Jul 13

Fulton Championships

MOD-SO-J CLSES

Lake Neatahwanta

Fulton, NY

Jul 12 - Jul 13

Midsummer Race at Salt Spring

INB-PRO-KPH-MOD-SO-OPC-J CLSES

Salt Spring Reservoir

Copperopolis, CA

Jul 17

Jul 17 - Jul 20

Ocean Cup - Pompano Beach, FL ar...

OS

Atlantic Ocean

Pompano Beach, FL

Jul 19

Jul 19 - Jul 20

2024 ALTON MIDWEST NATIONALS

OPC

MISSISSIPPI RIVER

Alton, IL

Jul 19 - Jul 20

Thunder on the Choptank

INB

Choptank River

Cambridge, MD

Jul 19 - Jul 20

Northland Mardi Gras Gran Prix

OPC

Flambeau River

Ladysmith, WI

Jul 23

Jul 23 - Jul 27

2025 APBA/ USTS PRO National Cha...

PRO-KPH;N

Lake DePue

DePue, IL, IL

Jul 25

Jul 25 - Jul 27

Leonardtown Bash on the Bay

VINTAGE

Breton Bay

Leonardtown, MD

Jul 25 - Jul 27

APOLLO APBA GOLD CUP

SE-VINTAGE-INB-UNL

McNary Pool, Columbia River

Kennewick, WA

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Modified Outboard Menu

Modified Outboard

Modified-Outboard

MOD racers aren't afraid to get their hands dirty - The goal in this category is to pull every last bit of horsepower out of your engine. In Modified Outboard, the engine builder's skill is just as important as the driver's. These boats are easily recognizable by their specially tuned pipes that make them as loud as they are fast. Because engines are constantly being modified to make the absolute most of what the rules allow, the competition is always fierce. Join the ranks of some of the best engine builders in the world, join Modified Outboard Racing.

Whether hydroplane or runabout, Modified classes are defined by the size of their engines (displacement). The numbers in the class names give you the approximate engine size in cubic centimeters. The 250ccMH, or 250 cubic centimeter Mod Hydro, is smaller than the 850ccMH, or 850 cubic centimeter Mod Hydro. Some classes have minimum weights, which increase with engine size. The smaller classes are often a good fit for younger, lighter drivers (14-year-olds may drive 200-250cc Mod classes, for example). The larger classes take considerable skill and experience. Propellers of four blades or less are used, and your prop choice can affect your speed enormously.

Modified Outboard Resources

Modified Outboard Classes